Of all the materials for surface conditioning, non-woven products work best. When non-woven materials are used for various polishing, brushing and deburring, it has the advantages of high strength, good durability and long service life. The plasticity of the material adapts to the more complex shape of the board surface. Nonwoven materials can give many products the desired uniform finish, brushing and appearance. The key to the excellent properties of the non-woven material is its resilience and empty structure. This structure allows cold running operation, preventing warping and surface deformation of the board.

 1. The abrasive analysis of the grinding wheel used can be divided into six types at present:

    1. Abrasive cloth or sandpaper, perhaps the most widely used abrasive form, is not only used in metal processing, but also in other areas (such as plastic surface processing), and has a good polishing effect.

    2. In the abrasive series, the grinding wheel has the most cutting ability, it is specially designed for grinding materials. It can cut larger defects quickly from the hardest surfaces.

    3. Wire wheel, used for the treatment of serious defects on the metal surface.

    4. The polishing cloth wheel can cut a small amount of metal and can provide mirror polishing.

    5. Non-woven abrasive is an ideal material for controlling material cutting and surface cleaning. The abrasive particles are bonded to the surface of the synthetic circular column and are deburred or brushed relative to the surface of the plate at different speeds to achieve pretreatment. the ultimate purpose.

    6. Nylon fiber brush, used for the treatment of minor defects or oxide film on the metal surface.

2. Cleaning and brushing

    Cleaning and Brushing In the printed circuit board manufacturing process, the most widely used material is quartz sand. The cleaned and brushed material is available in four different quartz sand types and sizes. Quartz sand is made of alumina, silicon carbide, aluminum silicate, talc, etc. The material is made into a variety of products, including cleaning and brushing rollers, printed circuit board brushes, and more.

3. The surface speed of the wheel

    The surface speed of the wheel is a very important factor, higher speeds provide good surface condition. In particular, a high wheel speed is ideal for removing burrs after drilling. However, excessive wheel speeds will cause overheating on the brushed surface, reducing product life and scrapping.

4. Pressurization

    During deburring, appropriate pressure is required according to the thickness of the board and the thickness of the copper foil. Excessive pressure will reduce the life of the product. The principle of pressurization is based on the state and requirements of the board. Use as little pressure as possible to achieve the desired technical effect.